Rough Idle Due to Faulty EGR Switching Valve on Hyundai XG350

Problem Description and Possible Solution

A defective exhaust gas recirculation (EGR) switching valve may cause an intermittent rough or unstable idle engine.

Problem Data
RepairPal Verified
Average mileage: 117,424 (65,000–240,000)
Engine affected: 3.5L V6
4 model years affected: 2002, 2003, 2004, 2005
28 people reported this problem
Viewing 1 - 8 of 8 comments
when car is in park the car vibrates and the rpm guage wont go down passed 2 on the gauge car vibrates until car is turned off
Rough idle. Took it to repair. Tech said evr valve. After service, it still idkes rough. Took it back tech said nothing wrong car over 10 yes old is not going to run like new.
EGR valve welded to threads. Finally removed new installed and same problem. Back in shop.
rough idle. has not been fixed. diagnosed as possible egr swich issue. dealer that sold me the car is supposed to be repairing it and also all required maintenance. I am waiting 3 weeks